# -*- coding: utf-8 -*-

#    OriginDB
#    Copyright (C) 2010  Jason Power <power.jg@gmail.com>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License along
#    with this program; if not, write to the Free Software Foundation, Inc.,
#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


from PyQt4.QtGui import *
from PyQt4 import QtCore


colors = [QColor(255,000,000,50),
		  QColor(000,255,000,50),
		  QColor(000,255,255,50),
		  QColor(255,000,255,50),
		  QColor(255,255,000,50)]

class AddReactionVisual(QUndoCommand):

	def __init__(self, rvis, scene, parent=None):
		QUndoCommand.__init__(self, parent)
		self.setText("add reaction")

		self.scene = scene
		self.rvis = rvis

	def undo(self):
		self.scene.removeItem(self.rvis)

	def redo(self):
		self.scene.addItem(self.rvis)
		self.scene.clean()


class RemoveReactionVisual(QUndoCommand):

	def __init__(self, rvis, scene, parent=None):
		QUndoCommand.__init__(self, parent)
		self.setText("remove reaction")

		self.scene = scene
		self.rvis = rvis

	def undo(self):
		self.scene.addItem(self.rvis)

	def redo(self):
		self.scene.removeItem(self.rvis)


class AddConnection(QUndoCommand):

	def __init__(self, connection, scene, parent=None):
		QUndoCommand.__init__(self, parent)
		self.setText("add connection")

		self.scene = scene
		self.connection = connection

	def undo(self):
		self.connection.remove()
		self.scene.removeItem(self.connection)

	def redo(self):
		self.connection.add()
		self.scene.addItem(self.connection)

class RemoveConnection(QUndoCommand):

	def __init__(self, connection, scene, parent=None):
		QUndoCommand.__init__(self, parent)
		self.setText("remove connection")

		self.scene = scene
		self.connection = connection

	def undo(self):
		self.connection.add()
		# TODO be sure the reactant and product is there
		self.scene.addItem(self.connection)

	def redo(self):
		self.connection.remove()
		self.scene.removeItem(self.connection)